The reaction system for octyl-β-glucoside synthesis catalysed by the almond-β-glucosidase has been characterised. The monophasic octanol saturated with different amounts of water served as a reaction medium. Both the glucose and the activated substrate p-nitrophenyl-β-glucoside were examined as glycon donors. The reverse hydrolysis and the transglycosylation were both used as reaction models fo...

Blueberries are particularly rich in anthocyanins and favored extensively for their health benefits. In this study, the anthocyanin profiles of fruits four blueberry cultivars (Gardenblue, Legacy, Misty, Brightwell) were investigated. Total content gradually increased all during development, but mature Brightwell Gardenblue had a higher than those Legacy Misty. Thirty-two kinds quantified using...

Qualitative and quantitative high performance liquid chromatography with diode array detection (HPLC-DAD) was performed to characterize the presence of phenolic compounds in Andean purple corn. Phenolic compounds were analyzed by separating them in two main fractions: a water fraction (WF) and an ethyl acetate fraction (EAF). The WF rich in anthocyanins revealed the presence of cyanidin-3-gluco...

F.A. Tomás-Barberán 7 F. Artés Departamento de Ciencia y Tecnología de Alimentos, CEBAS (CSIC), P.O. Box 4195, E-30080 Murcia, Spain Abstract For five new clones of pomegranate, cultivated under homogeneous conditions, changes in juice anthocyanin contents during ripening were studied. Six anthocyanin pigments were found to be responsible for the red color of pomegranate juice. These were quant...

BACKGROUND Test results on the bioavailability of isoflavones in the aglycone or glucoside form in Eastern and Western human subjects are contradictory. OBJECTIVE The objective was to investigate the bioavailability of the soy isoflavones daidzein and genistein in American women with typical American dietary habits after ingestion of the aglycone or glucoside form of isoflavones. DESIGN Fif...

We are studying the cellular signalling pathway leading to pterocarpan phytoalexin biosynthesis in soybean that is induced by a branched hepta-beta-glucoside originally isolated from the mycelial walls of the phytopathogenic oomycete, Phytophthora megasperma f. sp. glycinea. Our research has focused on the first step in this signal pathway, namely the specific recognition of the hepta-beta-gluc...

Background: Test results on the bioavailability of isoflavones in the aglycone or glucoside form in Eastern and Western human subjects are contradictory. Objective: The objective was to investigate the bioavailability of the soy isoflavones daidzein and genistein in American women with typical American dietary habits after ingestion of the aglycone or glucoside form of isoflavones. Design: Fift...

Aloe vera (Aloe barbadensis Miller) is widely spread around the world and it used in food cosmetic industry traditional medicine due to its high content bioactive compounds. Thus, this article investigated phenolic compounds of Romanian gel antioxidant capacity. The was extracted using 4 different solvents: methanol, ethanol, water, acetone. Total phenolics were measured by Folin-Ciocalteu meth...

The effect of cultivar and environmental variations their interaction on anthocyanin components strawberry were assessed for six cultivars grown in five locations from North to South Europe two different years. To evaluate the impact latitude- altitude-related factors, daily mean (Tmean), maximum (Tmax) minimum (Tmin) temperature global radiation accumulated 3, 5, 10 15 days before fruit sampli...